btjtterfield



G. H. BUTTERFIELD.

Carriage-Spring.

Panama Jan. 1, 1867,

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O. H. BUTTERFIELD, OF STURBRIDGE, MASSACHUSETTS, ASSIGN OR TO J. E. TAYLOR, OF SUTTON, MASSACHUSETTS.

Letters Patent No. 60,831, dated January 1, 1867.

IMPROVEMENT CARRIAGE SPRING.

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Be it known that I, C. H. BUTTERFIELD, of Sturbridge, in the county of Worcester, and State of Massachusetts, have invented a new and usefl Improvement in Carriage Springs, of which the following is a full, clear,

`and exact description, reference being had to the accompanying drawings, making a part of this specification, in

which- Figure 1 represents a longitudinal section at one end, and an elevation at the other end, of my invention; and

Figure 2 is an end view of the same.

My invention consists in constructing a carriage or wagon spring of a single leaf, and connecting it by a sti hinged joint at the upper end to the spring bar that supports the body of the carriage, the lower end of the spring being secured to the perch by means of a peculiarly formed clasp 'instead of being fastened by a bolt through the axle-tree in the usual manner. 4 V

Referring to the drawings, A represents the perch resting at each end upon the front and rear axle, respectively, of a wagon or carriage. On the 'npper side of each end is attached a. spring, C, which forms an irregular curve, and is connected to a bar, H,.that passes under and sustains or forms a part of the support, B, of the body of the carriage.` The spring is connected to the bar H by means of a sti hinged joint, instead of being hung to the same by a loose or shackle joint commonly used. The part B is attached to the bar H by means of screws passing through slots in the latter, so as to admit of a certain longitudinal play when in use. The lower portion of the spring C rests upon the perch A, and is secured to the same by means of a clasp, D, which is formed of a bar curved somewhat at its outer end to iit the curvature of the spring C, and isbolted at its inner end to the perch A. `Near its outer end the clasp is formed in a yoke shape, orwith two arms'extending downwards, and, terminating in a shank, as shown in iig. 2,'is bolted to. a projecting metallic strap passing under the perch A. In iitting the spring C to the perch, its end is passed through the open part of the clasp D, the outer end of the latter bearing against the spring at or near the commencement of the curve of the same, and the clasp is bolted to the perch. The peculiar form and adaptation of the clasp D, in connection with the close joint E, serves to equalize the action of the spring, and is found in practice to prevent the tendency of the perch to being forced or bent downwards at the centre, when the vehicle is heavily loaded, which is apt to cause an undue strain upon the axles by throwing the wheels out of the vertical plane.

Having thus described my invention, what I claim as new, and desire to secure byLetters Pat-ent, is-

1. The clasp D, constructed as shown, in combination with a single-leaf spring, C, as described. l

2. I claim securing the spring C to the bearing HB, by means of -the close joint E, in combination with .the clasp D, as and for the purpose set forth. Y f' In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

C. H. BUTTERFIELD.

Witnesses:

J. H. ADAMS, J. E. TAYLOR. 

